photovoltaic solar energy Articles
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Nanophotonic structures
This paper proposes a selection of topics on nanophotonic structures, which choice has been partly driven by the most outstanding achievements of Rhone-Alpes laboratories in the field. This includes high index contrast dielectric nanophotonic structures, in connection with hybrid micro-electronic/micro-photonic integration along III-V/silicon heterogeneous integration schemes, and for ...
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Improvement of perturb and observe MPPT method for photovoltaic systems: case of study
Maximum power point tracking system is widely used to maximise output power of photovoltaic array. A crucial issue of this system is an algorithm of maximum power point seeking. Well–known perturb and observe technique is optimal solution in terms of the ratio of cost and efficiency. However, this algorithm has some disadvantages such as oscillation around a maximum power point and decrease in ...
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Rural electrification by photovoltaic solar energy in Algeria
The economic and social development in Algeria in the last years has been in need of continues increasing in demand of electricity, especially in the isolated countryside. Solar energy represents a significant potential in Algeria, the country receives more than 3,000 hour of sunshine per year with a high level of radiation. The average of daily solar irradiation is from 5 to 7 kW hour m−2 the ...
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Design and performance evaluation of a photovoltaic sun-tracking system driven by a three-freedom spherical motor
In this study, a PV sun tracking system with the ability to move on two axes is designed. Its performance over a fixed tilted system is evaluated for the climatic condition of Denizli, Turkey. From the obtained results, it is seen that the sun tracking system improves the energy and exergy efficiency of the PV panel.Keywords: PV panels, spherical motors, sun tracking, energy efficiency, exergy ...
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Nova Sun Designated a BCorp
Nova Sun Power, a renewable energy company based in Pictou, N.S., has become the first Canadian solar company to secure BCorp certification and will soon complete the largest photovoltaic solar installation ever in Nova Scotia. The company said in a statement Tuesday that the 30-kilowatt hour project is a partnership with the Confederacy of Mainland Mi’Kmaq and Millbrook First Nation. The ...
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A comparative study on solar array parameter extraction methods
This paper presents a comparative study on different solar array parameter extraction methods such as a modified Newton–Raphson–based technique proposed in this work and two other popular techniques such as Bouzidi's Newton–Raphson method and Villalva's iterative method. A single–diode–five–parameter model is considered in this study for modelling the solar (PV) panel. The parameters of interest ...
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International Scholarships for Photovoltaics and Solar Energy Engineering at University of New South Wales
This project aims to bring international research and undergraduate students from Partner countries to Australia’s University of New South Wales’ (UNSW) premier photovoltaic research group by providing tuition scholarships. Additionally, this project will assist in enhancing the photovoltaics knowledge and teaching resource base in Partner countries, and improve the quantity and quality of ...
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Design, control and performance analysis of a standalone solar–PV energy generating system
This paper presents the design, control and performance of a low power standalone solar–photovoltaic (PV) energy generating system. The system includes a maximum power point tracking (MPPT) controller along with a full bridge DC–DC converter, an energy storage system and a voltage source inverter (VSI). The detailed design and modelling of the system components are given with incremental ...
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The photovoltaic boat for eco-tourism development in Koh Rattanakosin
Every year more than ten million foreign tourists visited Bangkok, Thailand and most of them visited the main historical attraction; Koh Rattanakosin. This research aimed to build a prototype of photovoltaic boat to serve tourists at Koh Rattanakosin, make low noise (70 dBA) and to support the eco-tourism policy. Four hundred twenty persons were surveyed using a questionnaire. Analysis indicated ...
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Technical Note: Loss-of-load probability of stand-alone solar photovoltaic system
In this technical note, a general method has been given to determine the loss-of-load probability (LOLP) of a stand-alone photovoltaic system as a function of normalised PV array output and energy availability at battery. The energy availability at the battery has been determined by using the solar radiation utilisability concept. To determine the LOLP, the PV array output is required, which is a ...
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Renewable energy technologies in Nepal
Nepal, one of the least-developed countries, has a per capita energy consumption of about 336 kilograms of oil equivalent (kgoe), which is much below the world average of 1,474 kgoe. Around 85.27% of the total energy consumption comes from traditional energy resources and only 0.48% from renewable sources. About 40% of the total population has access to electricity. This 40% uses 33% from the ...
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Integration of solar photovoltaic (PV) to LV distribution network: a case study
The development of renewable energy sources will increase the amount of generation connected to distribution networks. The main advantages are that optimally located distributed generation resources can reduce or postpone the need for investment in the transmission and distribution infrastructure; transmission and distribution losses are reduced as well as improvement in power quality and system ...
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Energy Utilities: Panorama 2023
Utilities are players with whom we all interact. We all contract energy for our businesses and homes, and at some point, we want to compare offers to see who offers the best service. Last week we looked at the annual energy management survey responses and discussed the current challenges and objectives of Energy Service Companies (ESCOs). We were glad to have gathered data from various Utilities ...
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Rural electrification through renewable energy in Nepal
Nepal is rich in hydropower. However, due to various constraints the rural sector of Nepal is still deprived of a national electrical grid. Renewable energy resources are the most viable and accessible sources to electrify these rural sectors. Micro-hydro and solar photovoltaics (PV) are widely used renewable energies for rural electrification. Presently, this source provides electricity to only ...
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Thermodynamic performance analysis of a hybrid Photovoltaic-Thermal (PV/T) integrated greenhouse air heater and dryer
In this paper, performance analysis of a hybrid photovoltaic-thermal (PV/T) greenhouse air heater and dryer has been carried out. Analytical expressions have been developed for: greenhouse air temperature, instantaneous and overall energy and exergy efficiencies for without load, and instantaneous exergy efficiency with load under forced mode operation. An experimental validation has been carried ...
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Thermal management of non–concentrating photovoltaic panels under extreme ambient conditions
Solar photovoltaic modules have reduced efficiency levels when the ambient temperature is very high. In this paper, the temperature and the efficiency of a non–concentrating flat plate collector is determined by a one dimensional steady state analysis at different solar radiation levels for the city of Riyadh, Saudi Arabia where the radiation intensity and ambient temperatures are very high. The ...
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A method for evaluating and selecting renewable and non-renewable energy technologies
This paper offers a simple method of evaluating the existing renewable and non-renewable energy technologies. The evaluation method is based on the weights given to the importance of six selection criteria: the economic viability; the conversion efficiency; the present level of the technological development; the environmental impacts; the after-production clean-up cost; the renewability and ...
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Utility Companies: Energy Services and Goals 2024
Utilities are a key player with which almost all individuals or companies must interact. Organizations require energy to carry out their business activities, and therefore seek out the utilities that provide the best service. In last week's article, we delved into the context of Energy Service Companies, examining their challenges, priorities, and trends. Today, we shift the focus to utilities. ...
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Retrofit of a century old land-house to a low-energy house
Converting a low-quality brick construction into a low-energy solar house takes five steps. First, avoid spillage by optimal space allocation. Second, apply natural and/or somatic energy wherever and whenever possible. Third, integrate passive and semi-passive solutions. Fourth, harvest renewable commodity energy. Fifth, efficiently complement previous steps with commercial energy. Twelve ...
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Green tech cost assessments must be country-specific
Designing efficient mechanisms for allocating climate funds to the developing world will require country-specific assessments of the cost of scaling up renewable energy technologies, says climate researcher Michael Jakob. Developing countries need financial support to help them adopt low-carbon technologies. Industrialised countries should cover the cost, according to the UN Framework Convention ...
By SciDev.Net
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